<template>
  <el-container class="home-container">
    <!-- 头部 -->
    <el-header>
      <div>
        <img src="../assets/images/heima.png" alt />
        <span>电商后台系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!-- 主体 -->
    <el-container>
      <!-- 侧边 -->
      <el-aside :width=" isCollapse ? '64px':'200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <el-menu background-color="#333744" text-color="#fff" active-text-color="#409eff" :unique-opened="true" ref="menu" :collapse="isCollapse" :collapse-transition="false" :router="true" :default-active="this.$router.history.current.path">
            <!-- 一级菜单 -->
            <!-- item.id为唯一的，所以每个一级导航点击事件也唯一,index只能接受string，id为number，小技巧：number+''转化为string -->
          <el-submenu :index="item.id+''" v-for="(item) in menuList" :key="item.id">
              <!-- 一级菜单模版区 -->
            <template slot="title">
                <!-- 图标 -->
              <i :class="iconsObj[item.id]"></i>
              <!-- 文本 -->
              <span>{{item.authName}}</span>
            </template>
            <el-menu-item :index="'/'+ subItem.path" v-for="subItem in item.children" :key="subItem.id" >
                <template slot="title">
                    <!-- 图标 -->
                    <i class="el-icon-menu"></i>
                    <!-- 文本 -->
                    <span>{{subItem.authName}}</span>
                </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 中间 -->
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data() {
    return {
      menuList: [],
      iconsObj: {
        125: 'iconfont icon-user',
        103: 'iconfont icon-tijikongjian',
        101: 'iconfont icon-shangpin',
        102: 'iconfont icon-danju',
        145: 'iconfont icon-baobiao'
      },
      isCollapse: false
    }
  },
  created() {
    this.getMenuList()
  },
  methods: {
    logout() {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async getMenuList() {
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menuList = res.data
    },
    toggleCollapse() {
      this.isCollapse = !this.isCollapse
    }
  }

}
</script>

<style lang="less" scoped>
.home-container {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }
  }
}
.el-menu{
  border-width: 0;
  margin: 0;
  .el-menu--popup-right-start{
    margin: 0;
  }
}
.el-aside {
  background-color: #333744;
}
.el-main {
  background-color: #eaedf1;
}
.iconfont{
  margin-right: 10px;
}
.toggle-button{
  background-color: #4a5064;
  text-align: center;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  letter-spacing: 0.2em;
  cursor: pointer;
}

</style>
